Bock-drilling mechanism



Nov. 29, 1927.

E. G. GARTIN ROCK DRLLING MECHANISM Filed Deo. 26. 1922 ilo Patented Nov. 29, 1927.

stares if c 1,651,199 *y PAT ENf'rI G'. GAETN; OF CLAREMONT, NEW'. HAMPSHIRE, ASSIGNOR, TO SULLIVAN MACHI'NERY COMPAJY,l CORPORATION 0F MASSACHUSETTS.

ROGK-DRI'VLLING MECHzANlSM.

Application led'December 26, 1922i'. Serial'No. 609,130.

My invention relates to. -rock drilling mechanisms, and more particularly to improved controlling: andfeeding mechanisms for use; therewith.

An object'otmvz invention. is to provide an improved roclrdrillingmechanism; Another objecto my'invention is to provid-e an improved rocl'drilling mechanism having-Iy improved feeding. mezmsf andy` improved controlling means for the. motor. ot said rock dri-lling;.Y mechanism] andfor the;` feeding means; thereof; Other objectsand` advantages of my invention will hereinafterinore fullyappear.v A

In the accompanying* drawings. l` have yslioivnfor purposes of illustrati-er-.- one for-1n which my.v invention may assumein practice.

In-.thesef.draiv1ngs,-

Eig. lV isf-a- View.. partiallyV in elevation and partially broken; away, showingl a. drilling mehanism embodying myl improved construction.

Fig.l 2 isv an enlarged* view` partially -in .centrall section .through the controlling mechanism constituting' aportion 'or` theuillustrative embodiment ot my invention, and partiallj7 in elevation.

V For purposesbfiillustration I have shown 'my invention embodied in a drillingmechanismop thel so-called stoperl 'tj/pe, which Vmechanismv is z generally. designated l.- This mechanism comprises a usL-ialdrilling` motor 2 hav-ing a piston 8' which isadaptedito 1mipartfa' seriesof blows yto a drillsteel 4; As

shown, afe'eding mechanism ot'wvell known form,- gzenerally designa-ted 5, cooperates Withthe drilling motor and comprises ateed cylindery 6 in Whose bore?r a piston. 8y having1 piston rod 9 isrec-iprocable, the rod 9 beingprovided with' an abutment engaging point l() and` the piston during operation remaining stationary While thecy-l-inder, togather. with the.V drilling motor,- advances toivard-'the Work in a usual manner, v

For the purpose of controllingfthe:operationof the-.motor 2 and` the supply ott air to'theeieedcylinder, l have devised anime provedcontrolling-mechanism bestv shown in Figure 2; This mechanism.includesa valve casingt 12, herein formed upon an inten mediateheadllbetween the motor- 2'A and Jfeed cjylinderf,4 although other positions off: course be selected. The valve ycas- .'ha-e as conical .bore lain; which 1 ai fixed bushing` l; is arranged; ,The bushing 15. likewise has .aconicali` borel Within which is: rotatable. a valve member: 17y shaped.l to.

tit the interior ofthe.y bushing: and' hav-ing `Within it a chamber 18. Fluid'froin al supll'to; be rotatedin suchinannen as-.to control athe: supply I ot fluidi therethrough.- Arranged in axialv alinement With thevalve-Ll andfherein rigidly screwedinto thestation;

ary-bushingi is a projecting supporting handle123 '.which is, inthe. .presentformr of in v invention,.madehollow as at` 24. toserve af storage: chamberzfor lubricant' and an automatic lubricant distributing valve.- ofV av well-known form .isz provided to transmit thelubricant from the chamber. 24Cl in suitable quantitiesaand: at agradualrate to the chamber 18f from Whenceit may be conducted tothemotor. The handle-23 has` a portion26arranged atfrightv angles? to the main portion thereofand pivoted Within this portion 26;'.isa`controllever- 27, one end of which projectsetothe. outside ofthe 'member 265 into.asuitableposition for easy-*operation by a hand-terasping the portion-26'. The other endl ot' thislever 27 engages av button 28uxporra stem 29 andisadapted-When the lever portion 27 is moved toward parallel;- ismwithfthehandle 26tomove the`r rod 29 longitudinally.- aga-inst.L the resistance ofY a spri-ng 30 Which-isv arra-nged'betweena plug 3l in the end' otthcfh'andle23 and fthe button 28. At-i the opposite end otthe stem- 29 there isarrangedv a valve 32; hereinatormed integral with the stem 29. although it may obviouslv be made detachable therefrom. This-valve 32is ot-the end-'seating` typejand is adapted to cooperate with the seatA 33 i'formed Within-the valve-member 17 and to controll port 34; passingthrough the valve into communication with the port.` 3.5'V which leads to the `feed 2cvlinder--borez It l will be understoodthatthe port 35 isnt-"such construction thatf turning otthehandle 22V to startfthe motor-2 will'y bring'the port `321: into communieationI Withthe port 35: Thevalve so f 32" is JSIfQh-tlynOtChedIa-t an angle asf-,at 3'6 motor cylinder and to the passage 34, pro-- vided the valve 32 be open. A graduated feed is obtained and the force of the feed is readily controlled by manipulation of the lever j portion 27, the feed being entirely interruptedfwhen air supplyis cut off hy the forcing to the left in Fig. 2 of the valve member 32 and graduated quantities of air being admitted through the. notch 37 and the groove 36, depending upon the position in which the stem 29 is held by thc lever` portion 27. y

While l have'in this application specifically described one form Which my invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that the invention may be modified and embodied in various other forms Without departing from its spirit or the scope of the appended claims.

lVhat I claim as new and Vdesire to secure by Letters Patent is: f

l. In a drilling mechanism, the combination with a drilling motor, a pressure fluid actuated feeding device therefor, and a. drill supporting handle projecting laterally therefrom,' of independently operable coaxial valves, one of which controls both the feeding device and said motor and the other of Which controls only the pressure inv said feeding device, said valves having independent operating handles, one of Which is rotatable ina plane at an angle to the plane Vof movement of the other handle, said latter handle being carried by said supporting handle.

2. ln -a rock drilling mechanism, the combination with a hammer drill and a pressure fluid feeding device attached thereto, of independently operable valves, one of Which is located Within the other and moves longitudinally thereof, and means including a supporting handle member projecting laterally from said drilling mechanism and means associated therewith for operating one of said valves. l 3. ln a pressure fluid operated drilling mechanism, the combination'yvith a hammer drill, a pressure fluid feeding device attached thereto, and a supporting handle Y'projecting therefrom of a valve member adjustable to control said drill and said feed, a coaxial valve reciprocable in said handle for exerting a supplemental control on said feed, and controlling means for said valves each operable by one hand of a drill runner.

- 4. In a pressure fluid operated drilling both moving bodily With said motor during feeding thereof.v f n 5. ln a drilling mechanism, the combina'- tion with a' drilling motor pressure fluid operated feeding means therefor, and a supporting handle projecting therefrom, of controlling means for said motor and feeding means comprising coaxially arranged valves having controlling means respectively arranged at opposite sides of a plane perpendicular to the axes of the Valvesand including the axis of the feeding means, one of said controlling means being carried by said supporting handle.

6. ln a drilling mechanism, the combination with a drilling motor and pressure fluid feeding means therefor, and aV supporting handle adapted to be grasped by the operator, of independently operable coaxially arranged valvesone of Which controls the pressure fluid supply to said feeding means and said drilling motor and the other for controlling only the pressure fluid supply to till said feeding means and arranged on said supporting handle, said valves having independent operating handles one of Which iS. rotatable in a plane at an angle to the plane of the other. f

7. In a drilling mechanism, the combinationvvith a drilling motor and pressure fluid feeding means therefor and a supporting handle adapted to be grasped by the operator, of independently operable eoaxially arranged controlling valves and operating handles therefor disposed at opposite sides of said mechanism,` one of said handles being carried by said supporting handle.

S. A drilling mechanism comprising a drilling motor vand feeding means therefor, a supporting handle j no'jecting from said mechanism, means fo-r'controlling said motor and said feeding means including independently operable valves arranged coaXially with their axes alined with the longitudinal axis of said handle and operating means for one of said valves carried by said supporting handle. f

9. A drilling mechanism comprising a drilling motor and feeding means therefor,-

a supporting handle projecting from said mechanism, and means for controlling said motor and said feeding means including a rotatable valve and a reciprocable valve both arranged coaxially with their axes'alined with the longitudinal 'axis of said supporting handle, one vof said valves extending Within said supporting handle and operable therefrom.

10. A drilling mechanism comprising a drilling motor and feeding means therefor, a supporting handle projecting from said mechanism, vand means for controlling said motor and said feeding means including a rotatable valve and a reciprocable end seating valve contacting therewith and a pivoted valve actuating' lever, both of said valves being arranged coaxially With their axes alined with the longitudinal axis of said supporting handle, and said lever being pivotally mounted at the outer end of said supporting handle.

11. A drilling mechanism comprising a drilling motor and a pressure fluid feeding means therefor, a supporting handle projecting from said mechanism, a throttle valve for controlling the fluid supply to said motor and to said feeding means, and a supplemental feed controlling valve arranged coaxially with said throttle valve, and` means for operating said feed controlling valve carried by said supporting handle.

1Q.. A drilling mechanism comprising a drilling motor and pressure fluid feeding means therein, a supporting handle projectT ing from said mechanism adapted to be grasped by the operator, a throttle valve for controlling the fluid supply to said motor,

and, means including a valve arranged coaxially With said throttle valve and associated with the supporting handle for enabling the operator to control said feeding means With but asingle hand Without removing said hand from said supporting handle.

13. A drilling mechanism comprising a drilling motorl and pressure fluid feeding means therein, a supporting handle projecting from said mechanism adapted to be grasped bythe operator, a throttle valve for controlling the fluid supply to said motor, and means including a valve arranged coaxially With said throttle valve and alined with the longitudinal axis of said handle and so arranged with respect to the latter as to enable the operator to control said feeding means with but a single hand Without removing said hand from said supporting handle. f

14. A drilling mechanism comprising a drilling motor and pressure fluid feeding v means therein, a supporting handle projectmeans therefor, coaxial controlling valvesv for said drilling motor and Vsaid feeding means, a supporting handle disposed coaxially with said valves and projecting from said mechanism, one of said valves extending' within said supporting handle, a lubricant chamber disposed Within said handle, and means for supplying lubricant from Vsaid chamber directly to said controlling valves.

16. In a 'drilling mechanism comprising a drilling motor and pressure fluid actuated feeding means therefor, a. main controlling valve for said motor and feeding means, said valve having a hollow interior communicating With the source of fluid supply, a supporting handle disposed coaxially With said valve and projecting laterally7 'from said mechanism, a feed control valve coaxial With said control valve and slidable longitudinally Within said supporting handle, operating means for said feed control valve carried by said supporting handle, a lubricant chamber formed in said handle, and means for supplying lubricant from said handle ydirectly to the hollow interior of saidmain controlling valve.

17. In a drilling mechanism, the combinationv of a drilling motor, a fluid actuated feeding element therefor, and a supporting handle extending laterally atone side of the drill and having a grasping portion at. its outer extremity, of independently Operable coaxially arranged valves, one of which controls fluid flow to both said feeding element and said motor and the other of which controls only the pressure in said feeding element, and controlling means for said latter valve carried by said supporting handle and including an operating portion disposed adjacent said grasping portion.

In testimony whereof I affix my signature.

ELMER G. GARTIN.

GERTITICATE 0F LB/EER G. GARTEN.

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e n the Patent Off Signed and sealed this lth day of lzumafy A. i923, 

